disappoint

disappoint at, disappoint by, disappoint in, disappoint of, disappoint with

disappoint后加介词at, by, in, of, with时它们之间的差别不大,一般有以下规律可循:当表示“对所见所闻感到失望”时,多用at; 表示“对没有达到预期目标而失望时”,多用in〔of, with〕; 表示“对没有得到东西而失望”,多用of; disappoint by则多用于被动结构,强调“使某人失望”,此外表示“对人失望”须用介词in; 接动名词时,用at或by。试比较:
She was disappointed in the book.
她对此书失望。
She was disappointed of the book.
她对没有弄到此书而失望。
We were disappointed at his speech.
我们对他的讲话感到失望。
We were disappointed by his speech.
他的讲话使我们感到失望。